Home / 43,578.41-65,378.54-13,999.23

Finding the Fourth Proportional to 43,578.41, 65,378.54 and 13,999.23

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Solution

The fourth proportional to 43,578.41, 65,378.54 and 13,999.23 is: 21,002.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,578.41 : 65,378.54 = 13,999.23 : x
  2. Step 2: Convert to fraction form
    43,578.41/65,378.54 = 13,999.23/x
  3. Step 3: Cross multiply
    43,578.41x = 65,378.54 × 13,999.23
  4. Step 4: Simplify right side
    43,578.41x = 915,249,253.52
  5. Step 5: Solve for x
    x = 915,249,253.52/43,578.41
  6. Step 6: Final answer
    x = 21,002.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.